# How to go to the line below, without changing horizontal position?

I would like to start writing in math display mode, and then continue on the next line, from the exact same . Something like this:

abc = defg on this line
and i continue on the next line


This will be used inside \frac.

What would be the best way to achieve this? Preferably without using any packages (I'm sure there must be a way to get this done directly in LaTeX)...

If this were in text mode I could save the current horizontal position, then do a \newline, and then restore the position, maybe, but it's math mode.

• – Werner Jul 7 '17 at 16:50
• What do you mean by "This will be used inside \frac"? – Werner Jul 7 '17 at 16:51
• I will write \frac{A}{B}, and inside B, I'll want to skip to the line below. – Jay Jul 7 '17 at 16:53
• Must we tell a user for more than 6 years to show us a MWE? Nevertheless, see, e.g., multilined or gathered or aligned in mathtools and amsmath. – Schweinebacke Jul 7 '17 at 16:54
• @Schweinebacke: I don't have a MWE, I couldn't even get close to what I need, so I included the output I wanted. The array approach in Werner's answer seems to work for me -- I'll check. – Jay Jul 7 '17 at 16:57

This is fairly trivial to obtain with just an array:

\documentclass{article}

\begin{document}

$\setlength{\arraycolsep}{0pt} % May be needed, depending on your requirements \begin{array}{ l l } abc = defg & \\ & hijkl \end{array}$

\end{document}

• Yes -- of course! An array will work just fine (I'll check if no problems arise, but I thin it's perfect). Thank you! – Jay Jul 7 '17 at 16:58

Quite simple with align (or aligned):

\documentclass{article}
\usepackage{mathtools}

\begin{document}

\begin{align*}
abc = defg\text{ on this line} & \\
& \text{and I continue on the next line}
\end{align*}

\end{document}